Stop-motion for warring-machines



(No Model.) v

' J. B. GREENHALGH.

STOP MOTION FOR WARPINO MACHINES.

No. 248,451. l Patented OOt. 18,1881.

MAMMA M ATTORNEYS.

N. PETERS. Pnum-Limngupher. wnahmgmn, D. a

UNITED STATES PATENT OFFICE.

JOHN B. GREENHALGH, OF BLAOKSTONE, MASSACHUSETTS.

STOP-MOTION FOR WARPING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 248,451, dated October 18, 1881.

Application filed June 11l 1881. (No model.)

Toall tchom it may concern:

Be it known that I, J oHN B. GREENHALGH, of Blackstone, in the county of Worcester and State of Massachusetts, have invented an Improved Stop-Motion for warping-Machines, of which the following is a specification.

My improvements relate to stop-motion devices for warping-machines; and theinvention consists in a vibrating bar, pivoted fallers carried by al rock-shaft, and tripping mechanism tted to actuate a belt-shifter, all as hereinafter described and claimed, the same being an improvement on the devices shown in Letters Patent granted to me January 29,1878, No. 199,702.

In the accompanying drawings, Figure l is a front elevation ofso much of a warping-inachine as is necessary to explain the invention. Fig. 2|is an end 'view of the machine, partly in section; and Fig. 3is a detail view, showing the stop mechanism in the position it assumes when a thread breaks.

Similar letters of reference indicate corresponding parts. Y

A A are the end frames of the machine.

Bis the cylinder on a shaft, a, that is sustained in frames A.

b is a pulley, fast on shaft a, for receiving the driving-belt. cis a loose pulley on the same shaft.

d is a belt-shifting lever, onnrcted with a foot-treadle, d.

The beams, as shown in dotted lines, willrest upon cylinder B, and my improved devices are tted between the cylinderB and bobbin-stand (not shown) at theopposite side ofthe machine, as next described.

' fis a rock-shaft, provided with upright arms f', that are connected by a rod or wire, g. On one end ofthe shaftfis a crank-arm, li, to which connects the rod t' of an eccentric, r, that is on the shaft c.

Z is a rock-shaft, placed at one side of shaft f in supports A, and provided with arms Z', that sustain a bar, m, above the shaft. n n are gravitating fallers, pivoted on the bar m, and

bent upward and formed with eyes n' for the thread. On one end of shaft lis atrip-dog, o, which is surrounded by a yoke, p, that is on end of a latch, q. The latch q is tted for vertical movement in guides on frame A, and carries a spiral spring, q, tending to move the latch downward.

r is a lever, one end of which extends at the side of the shifting-lever d, while the other end extends contiguous to the lower end of latch g.

s is a spring connected to lever r, and acting through the lever to move the shifter tl to the loose pulley c.

In operation the threads pass from the bobbins (not shown) through suitable guides vto and through the eyes 'n' of the fallers n, and through the vibrating guide t to the beam on cylinder B. The fallers n are thus held up out ofreach of the rod g, that is constautlyvibrated with the shaft by the connections to the eccentric lc. The belt-shifter is set to hold the belt to the fast pulley, and the latch q, engaging lever fr, retains the shifter. In case any thread breaks, its faller a, being thus released, drops into the path of rod g, the rod, coming in contact therewith, moves the bar m, and the partial turn given to shaft Z causes the upward movement of latch qby the dog o, so that, the lever r being released, the spring s carries the belt to the loose pulley.

This mechanism will allow the winding of single or double threads, and will insure stoppage ofthe machine. f

Having thus fully described my invention, I claim as new and desire to secure by Letters Patentl. The combination of the rock-shaftj', provided with arms f', the rod or wire g, rockshaft I, provided with arms Z and ineanslfor operating the rock-shaftf, the bar m, fallers u, and tripping mechanism fitted for release by movement of shaft l, all substantially as described, for operation as set forth.

2. The combination of lever r, springs s, beltshifter d, latch q, provided with yoke p and spring q', with the shaft l, provided with dog 0 and arms Z', bar m, fallers n, and vibrating rod g, substantially as shown and described.

JOHN B. GREENHALGH.

Witnesses:

JOHN N. TAYLOR, J oHN .WIGGINs 

